Sampling device for byproduct hydrochloric acid in chlorinated environment-friendly plasticizer production

Abstract

The utility model discloses a sampling device for a byproduct hydrochloric acid in chlorinated environment-friendly plasticizer production. The sampling device comprises a fan, a hydrochloric acid sampling pipe, a transparent plastic sampling door, a perforated support plate, a rotary switch and a barrel, the upper end and the lower end of the cylinder body are closed; the perforated supporting plate is fixed on the inner side wall of the middle lower part of the cylinder body and is used for placing a sampling bottle; the transparent plastic sampling door is fixedly arranged on the inner side wall of the cylinder body, is positioned above the perforated supporting plate and is used for observing the sampling condition; the hydrochloric acid sampling pipe extends into the barrel from the upper end of the barrel, the lower end of the hydrochloric acid sampling pipe is positioned right above the perforated supporting plate, the upper end of the hydrochloric acid sampling pipe is connected with a hydrogen chloride absorption tank through a pipeline, and a rotary switch is arranged at the upper part of the hydrochloric acid sampling pipe; and the fan is connected with the upper end of the barrel through a pipeline. The sampling device is simple and compact in structure, safe and simple in sampling operation and free of environmental pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of production auxiliary devices for plasticizers of organic chemical products, and particularly relates to a sampling device for by-product hydrochloric acid in the production of chlorinated environmental protection plasticizers. Technical Background

[0002] The main component of chlorinated environmental protection plasticizer is chlorinated fatty acid methyl ester, which is synthesized by reacting fatty acid methyl ester with chlorine gas. In this reaction, chlorine atoms replace hydrogen atoms in fatty acid methyl ester to make fatty acid methyl ester become chlorinated fatty acid methyl ester. During the production process of chlorinated environmental protection plasticizer, by-product hydrochloric acid will be generated. This hydrochloric acid is produced by absorbing hydrogen chloride with pure water. Before the concentration of hydrochloric acid reaches saturation, it is necessary to continuously sample and detect its concentration. During the sampling process of hydrochloric acid, on the one hand, the volatilization of hydrogen chloride gas will have an irritating effect on the human facial features, and on the other hand, the splashing hydrochloric acid may also corrode clothes and irritate the skin, affecting the safety of operators. Therefore, it is necessary to develop a sampling device for by-product hydrochloric acid in the production of chlorinated environmental protection plasticizer with safe and reliable operation. Summary of the Invention

[0003] The purpose of the utility model is to provide a sampling device for by-product hydrochloric acid in the production of chlorinated environmental protection plasticizer with simple and compact structure, safe and simple sampling operation, and no environmental pollution.

[0004] To achieve the above purpose, the sampling device for by-product hydrochloric acid in the production of chlorinated environmental protection plasticizer of the utility model includes a fan 1, a hydrochloric acid sampling pipe 2, a transparent plastic sampling door 3, a perforated support plate 4, a rotary switch 5, and a cylinder 6; the cylinder 6 is cylindrical with its upper and lower ends closed; the perforated support plate 4 is fixed on the inner side wall of the middle and lower part of the cylinder 6 for placing a sampling bottle; the transparent plastic sampling door 3 is fixedly installed on the inner side wall of the cylinder 6 and above the perforated support plate 4 for observing the sampling situation; the hydrochloric acid sampling pipe 2 extends into the cylinder 6 from the upper end, its lower end is directly above the perforated support plate 4, and the upper end is connected to a hydrogen chloride absorption tank through a pipeline. A rotary switch 5 is provided on the upper part of the hydrochloric acid sampling pipe 2; the fan 1 is connected to the upper end of the cylinder 6 through a pipeline.

[0005] The sampling device for by-product hydrochloric acid in the production of chlorinated environmental protection plasticizer of the utility model has the following technical features and beneficial effects:

[0006] 1. Under the action of the fan 1, the inside of the device is in a slightly negative pressure and forms a closed space; the negative pressure can absorb the volatilized hydrogen chloride, avoiding the irritating effect on the facial features of sampling operators, and the closed state can prevent hydrochloric acid from splashing and corroding the clothes of operators and irritating the skin, and the sampling operation is safe and simple.

[0007] 2. The whole device has a simple and compact structure, and is convenient, reliable and easy to use. Description of the Drawings

[0008] Figure 1 This is a schematic structural diagram of a sampling device for by - product hydrochloric acid in the production of the chlorinated environmental - friendly plasticizer of the present utility model.

[0009] Reference numerals: fan 1, hydrochloric acid sampling tube 2, transparent plastic sampling door 3, perforated support plate 4, rotary switch 5, cylinder 6. Detailed Description of the Preferred Embodiment

[0010] The following further details the specific implementation of the sampling device for by - product hydrochloric acid in the production of the chlorinated environmental - friendly plasticizer of the present utility model in conjunction with the drawings.

[0011] Figure 1 As shown, the sampling device for by - product hydrochloric acid in the production of the chlorinated environmental - friendly plasticizer of the present utility model includes a fan 1, a hydrochloric acid sampling tube 2, a transparent plastic sampling door 3, a perforated support plate 4, a rotary switch 5, and a cylinder 6; the cylinder 6 is cylindrical with its upper and lower ends closed; the perforated support plate 4 is fixed on the inner side wall of the middle - lower part of the cylinder 6 for placing the sampling bottle; the transparent plastic sampling door 3 is fixedly installed on the inner side wall of the cylinder 6 and above the perforated support plate 4 for observing the sampling situation; the hydrochloric acid sampling tube 2 extends into the cylinder 6 from the upper end, its lower end is directly above the perforated support plate 4, and the upper end is connected to a hydrogen chloride absorption tank through a pipeline, and a rotary switch 5 is provided on the upper part of the hydrochloric acid sampling tube 2; the fan 1 is connected to the upper end of the cylinder 6 through a pipeline.

[0012] The specific operation of using the sampling device for by - product hydrochloric acid in the production of the chlorinated environmental - friendly plasticizer of the present utility model is as follows:

[0013] Open the fan 1 and the transparent plastic sampling door 3, place the sampling bottle on the perforated support plate 4 directly below the hydrochloric acid sampling tube 2, close the transparent plastic sampling door 3, open the rotary switch 5 to obtain the hydrochloric acid sample, then open the transparent plastic sampling door 3, take out the sampling bottle and close the transparent plastic sampling door 3 to complete the sampling of by - product hydrochloric acid in the production of the chlorinated environmental - friendly plasticizer.

Claims

1. A sampling device for hydrochloric acid, a byproduct in the production of chlorinated environmentally friendly plasticizers, characterized by: It comprises a fan (1), a hydrochloric acid sampling tube (2), a transparent plastic sampling door (3), a perforated support plate (4), a rotary switch (5), and a barrel (6); the barrel (6) is cylindrical, and its upper and lower ends are closed; the perforated support plate (4) is fixed to the inner side wall of the lower middle part of the barrel (6) and is used to place a sampling bottle; the transparent plastic sampling door (3) is fixedly mounted on the inner side wall of the barrel (6) and is located above the perforated support plate (4) and is used to observe the sampling situation; the hydrochloric acid sampling tube (2) extends from the upper end of the barrel (6), the lower end of which is located just above the perforated support plate (4), and the upper end is connected to a hydrogen chloride absorption tank through a pipeline, and a rotary switch (5) is provided on the upper part of the hydrochloric acid sampling tube (2); the fan (1) is connected to the upper end of the barrel (6) through a pipeline.

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